Engine Block Heater: Service and Repair

Block Heater









Removal and Installation

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury. Procedures

With vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

3. Disconnect the block heater electrical connector and position aside.

4. NOTE: Do not loosen the block heater retaining screw more than necessary for removal.

Loosen the block heater retaining screw and remove the block heater.

- To install, tighten to 2 Nm (18 lb-in).

5. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury. Description and Operation

NOTICE: Make sure the block heater electrical connector is routed and secured away from rotating or hot components, or damage to the cable can occur.

To install, reverse the removal procedure. If equipped with a fire suppression system, repower the system.

6. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.